Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['Y', '4195', 'J', '941', 'M', 'j', '1937']

25, 4195, 10, 941, 13, 10, 1937